If I plan out how to kill someone, get the right weapon and execute on my plan, yeah that is murder.

If I see a donation stand for children in Africa and decide to rather buy a video game from that money, well some children are going to starve because of my decision but I haven't exactly killed them.

Blaming Mao for a famine is completely insane if you are not super brainwashed. He was a human not a god.

But considering you took the highest death toll estimation you could find already shows you are not interested in facts but in pushing a narrative.